recipetool: create: fix conflict between SRCREV and tag

If you specify 'tag=' for a git URL and passed to recipetool create, you
will get into Bitbake expansion error shown below:

----- snip -----
$ devtool add --version 2.4.2 mbedtls "git://github.com/ARMmbed/mbedtls;tag=mbedtls-2.4.2"
...
bb.data_smart.ExpansionError: Failure expanding variable SRCPV, expression was ${@bb.fetch2.get_srcrev(d)} which triggered exception FetchError: Fetcher failure: Conflicting revisions (abeccb9dbd7e19ae91ac50e1edd3803111c5f9b6 from SRCREV and mbedtls-2.4.2 from the url) found, please specify one valid value
----- snip -----

Assuming the tag is valid, we should get the tag commit hash and
drop the usage of 'tag=' from SRC_URI. By using a commit hash
corresponding to the tag will prevent bitbake from accessing
remote repository in order to expand SRCPV.

(From OE-Core rev: 4953d54dd06ff7025406d2df6a71c95162cc1ec7)

Signed-off-by: Chang Rebecca Swee Fun <rebecca.swee.fun.chang@intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
(cherry picked from commit 53f8effa3eb07dc7035ff9933e7918318f242579)
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/lib/recipetool/create.py

@@ -477,7 +477,6 @@ def create_recipe(args):
         if tag:
             # Keep a copy of tag and append nobranch=1 then remove tag from URL.
             # Bitbake fetcher unable to fetch when {AUTOREV} and tag is set at the same time.
-            # We will re-introduce tag argument after bitbake fetcher process is complete.
             storeTagName = params['tag']
             params['nobranch'] = '1'
             del params['tag']
@@ -549,13 +548,11 @@ def create_recipe(args):
 
         # Since we might have a value in srcbranch, we need to
         # recontruct the srcuri to include 'branch' in params.
+        scheme, network, path, user, passwd, params = bb.fetch2.decodeurl(srcuri)
         if srcbranch:
-            scheme, network, path, user, passwd, params = bb.fetch2.decodeurl(srcuri)
             params['branch'] = srcbranch
-            srcuri = bb.fetch2.encodeurl((scheme, network, path, user, passwd, params))
 
         if storeTagName and scheme in ['git', 'gitsm']:
-            # Re-introduced tag variable from storeTagName
             # Check srcrev using tag and check validity of the tag
             cmd = ('git rev-parse --verify %s' % (storeTagName))
             try:
@@ -565,6 +562,9 @@ def create_recipe(args):
                 logger.error(str(err))
                 logger.error("Possibly wrong tag name is provided")
                 sys.exit(1)
+            # Drop tag from srcuri as it will have conflicts with SRCREV during recipe parse.
+            del params['tag']
+        srcuri = bb.fetch2.encodeurl((scheme, network, path, user, passwd, params))
 
         if os.path.exists(os.path.join(srctree, '.gitmodules')) and srcuri.startswith('git://'):
             srcuri = 'gitsm://' + srcuri[6:]